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Table 1 Characteristics of the included patients

From: The predictive value of respiratory function tests for non-invasive ventilation in amyotrophic lateral sclerosis

  All patients (n = 110)
Demographic and disease variables
 Male (%) 60.3
 Diagnosis ALS/PMA (% ALS) 84.0
 Onset spinal/bulbar/both (%) 60.3 / 23.7 / 16.0
 Age at referral (years) 61.5 ± 12.0
 Disease duration (years)° 2.0 ± 1.7
 Mortality (n)° 67
Variables at first evaluation at the HVS
 Interval referral and first HVS assessment (weeks) 5.6 ± 5.1
 PCO2 (mmHg) 39.4 ± 5.6
 Bicarbonate (mmol/L) 26.40 ± 3.69
 Follow up until NIV (months)* 9 ± 8
  1. Values are mean (SD) unless stated otherwise. Time of death was checked in the Municipal Personal Database at January 1th, 2016 [38]. °Missing data of 20 patients, n = 90. *Only patients who received an NIV indication, n = 87. ALS Amyotrophic lateral sclerosis, PMA Progressive Muscular Atrophy, HVS Home ventilation services, NIV Non-invasive ventilation